Vulnerability identifier: #VU3871

Vulnerability risk: Low

CVSSv3.1: 2.1 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-8324

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description
The vulnerability allows a physical attacker to cause DoS condition on the target system.

The weakness exists in the ext4 implementation due to improper track of the initialization of certain data structures. A physical attacker can submit a specially crafted USB device, related to the ext4_fill_super function, trigger NULL pointer dereference and cause the service to crash.

Mitigation
Update to version 2.6.34.

Vulnerable software versions

Linux kernel: 2.6.33 - 2.6.33.7

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External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=744692dc059845b2a30221...

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Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.